Pearlight 12V 20W IP67 waterproof LED power supply Aluminum Alloy Transformer AC90-265 to 12 Volt DC Output 1. DC 12V 20W. Weight 0.2KG. Using percentage of power supply is 80%, i.e the power of load is 16 watt, you should choose 20W output transformer, otherwise there is possibility to cause the earlier invalidation by person. 2. Shell Material: Aluminum Alloy; Main Color: silver white, AC lead wire be WITHOUT plug. 3. Automatic protection for: short circuit / overload / over voltage / high temp 4. Wiring instruction for DC output: Load's wattage not over 80% of rated power to be ideal performance 5. The transformer be designed in constant voltage, warranty be invalid if using for lamp which designed constant current solution. CE RoHS certification, one year warranty.